SPNS254A June 2022 – March 2024 TMS570LC4357-SEP
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The TMS570 platform architecture defines a special mode that allows various clock signals to be selected and output on the ECLK1 terminal and N2HET1[12] device outputs. This special mode, Clock Test Mode, is very useful for debugging purposes and can be configured through the CLKTEST register in the system module. See Table 7-18 and Table 7-19 for the CLKTEST bits value and signal selection.
SEL_ECP_PIN = CLKTEST[4-0] | SIGNAL ON ECLK1 |
---|---|
00000 | Oscillator Clock |
00001 | PLL1 Clock Output |
00010 | Reserved |
00011 | EXTCLKIN1 |
00100 | Low-Frequency Low-Power Oscillator (LFLPO) Clock [CLK80K] |
00101 | High-Frequency Low-Power Oscillator (HFLPO) Clock [CLK10M] |
00110 | PLL2 Clock Output |
00111 | EXTCLKIN2 |
01000 | GCLK1 |
01001 | RTI1 Base |
01010 | Reserved |
01011 | VCLKA1 |
01100 | VCLKA2 |
01101 | Reserved |
01110 | VCLKA4_DIVR |
01111 | Flash HD Pump Oscillator |
10000 | Reserved |
10001 | HCLK |
10010 | VCLK |
10011 | VCLK2 |
10100 | VCLK3 |
10101 | Reserved |
10110 | Reserved |
10111 | EMAC Clock Output |
11000 | Reserved |
11001 | Reserved |
11010 | Reserved |
11011 | Reserved |
11100 | Reserved |
11101 | Reserved |
11110 | Reserved |
11111 | Reserved |
SEL_GIO_PIN = CLKTEST[11-8] | SIGNAL ON N2HET1[12] |
---|---|
0000 | Oscillator Valid Status |
0001 | PLL1 Valid Status |
0010 | Reserved |
0011 | Reserved |
0100 | Reserved |
0101 | HFLPO Clock Output Valid Status [CLK10M] |
0110 | PLL2 Valid Status |
0111 | Reserved |
1000 | LFLPO Clock Output Valid Status [CLK80K] |
1001 | Oscillator Valid status |
1010 | Oscillator Valid status |
1011 | Oscillator Valid status |
1100 | Oscillator Valid status |
1101 | Reserved |
1110 | VCLKA4 |
1111 | Oscillator Valid status |